Micrometer

Technical data Measuring range: 50 - 75 mm Accuracy: 0.01 mm Operating temperature: 5 C - 40 C / 41 F - 104 F Humidity influence: Negligible below 80% relative humidity For precise measurements in the range of 50 to 75 mm. Preparation for work: - Clean the measuring surfaces and guide. Use a cotton cloth for this purpose. Do not use solvents or acids. - Check the zero position and adjust if necessary with the supplied spanner so that the line marked "0" on the drum coincides with the horizontal scale line. 

Measuring method: - The drum can only be rotated after the retaining clip has been unlocked. - Separate the measuring surfaces a little further than the object to be measured. - Then, turn the drum to make a rough adjustment, then continue tightening by turning the friction clutch knob. - Stop tightening when the clutch engages, i.e. further rotation of the handwheel will not cause the drum to rotate. - Read the measurement result according to the measuring principle shown in the figure. It is recommended to mount the item to be measured or the micrometre before starting the measurement.

This will allow you to achieve the highest measurement accuracy. It is also recommended to carry out several measurements in order to obtain the arithmetic mean of the results.